The fourth chapter of the Bhagavad Gita is Jnana Karma Sanyasa Yoga. In this chapter, Krishna glorifies the Karma Yoga and imparts the Transcendental Knowledge (the knowledge of the soul and the Ultimate Truth) to Arjuna. He reveals the reason behind his appearance in this material world. He reveals that even though he is eternal, he reincarnates time after time to re-establish dharma and peace on this Earth. His births and activities are eternal and are never contaminated by material flaws. Those persons who know and understand this Truth engage in his devotion with full faith and eventually attain Him. They do not have to take birth in this world again.
The wise call him learned whose actions are all devoid of desires and their thoughts, and whose actions have been burnt away by the fire of wisdom.OPEN VERSE
Having given up attachment to the results of action, he who is ever-contented, dependent on nothing, he really does not do anything even though engaged in action.OPEN VERSE
One who is without solicitation, who has the mind and organs under control, (and) is totally without possessions, he incurs no sin by performing actions merely for the (maintenance of the) body.OPEN VERSE
Remaining satisfied with what comes unasked for, having transcended the dualities, being free from spite, and equipoised under success and failure, he is not bound even by performing actions.OPEN VERSE
Of the liberated person who has got rid of attachment, whose mind is fixed in Knowledge, actions undertaken for a sacrifice get totally destroyed.OPEN VERSE
The ladle is Brahman, the oblations is Brahman, the offering is poured by Brahman in the fire of Brahman. Brahman alone is to be reached by him who has concentration on Brahman as the objective [As an object to be known and attained. (Some translate brahma-karma-samadhina as, 'by him who sees Brahman in action'.)OPEN VERSE